Confused which login module to use

Manfred,
Just so you know, I'll be moving this to the JFBConnect / Joomla 2.5 forums after I post this.

For logging in, we'd recommend using the SCLogin module which comes with JFBConnect. It has the standard Joomla login module so users can login normally with their username/password. It also has a setting for "Registration Component" which you can set to Community Builder. When you do that, the "Register For this Site", "Forgot Passwords", etc links will direct the user to the correct CB page.

If you'd prefer to use a different login module, you can definitely do so. You'll simply want to add the {JFBCLogin} tag somewhere on your site (in an article, in another login module template, etc). Wherever that tag is displayed the to the user, JFBConnect will replace it with the proper "Login with Facebook" button.

Hope that helps explain, but if you need more info, just let us know!

Thanks,
Alex